I just had two new 7100t handsets delivered for staff. Normally you just plug in the new handset and the desktop software prompts to ask if you want to use this new handset PIN instead of the old. Once you say yes it syncs and off it goes with the new handset.

This isn't happening. It prompts to switch from PIN:0 to PIN : xyz (where xyz is the new PIN). It then starts a sync. But it errors complaining that to sync the device the PIN's must match. When you look in the desktop manager it is listing the PIN as 0 again.

I have tried assigning the device from the server too and get the error: